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Charles L. Krum was a key figure in the development of the Teletype a machine which played a key role in the history of telegraphy and computing.
The history of the Teletype and of Charles Krum's involvement in it, begins in 1902.
In 1902, Mr. electrical engineer Frank Pearne approached Mr. Joy Morton head of Morton Salt seeking a sponsor for Pearne's research into the practicalities of developing a printing telegraph system.
Joy Morton needed to determine whether this was worthwhile and so consulted renowned mechanical engineer Charles Krum, who was vice president of the Western Cold Storage Company (which was run by Mortons brother Mark Morton).
Krum gave Joy Morton a positive response to the idea of helping Pearne, so space to set up a laboratory in the attic of Western Cold Storage was provided to Pearne.
Pearne, after about a year of unsuccessful experiments, lost interest and left to get involved in teaching.
Krum was prepared to continue Pearnes work, and in 1903 a patent was filed for a typebar page printer (Patent No. 888,335; filed August 22, 1903; issued May 19, 1908).
In the following year, 1904 Krum filed a patent for a type wheel printing telegraph machine (Patent No. 862,402; filed August 6, 1904; issued August 6, 1907).
In 1906 Charles Krum's son Howard Krum graduated in electrical engineering and joined his father in this work.
Lots more detail to go into this article, including E. E. Kleinschmidt and Morkrum involvement in Teletype development
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